Apparatus for purifying industrial oils and fats.



L. J. NO E L.

APPARATUS FOR PURIFYING INDUSTRIAL OILS AND FATS.

APPLICATION FILED MAY 4, 1914.

Patented Dec. 19

WITNESSES R WN m o w WW M A m. u m 5 y 0 Z were,

LOUIS JULES NOEL, or ramway, rimncn.

APPARATUS FOR PURIFYING INDI J 'STRIAL OILS AND FATS.

Specification of Letters Patent.

Patented Dec. 19, 11916,.

Application filed May 14, 1914. serial No. 838,487.

To all whom it may concern Be it known that I, LOUIS JULES Nofin, acitizen of the French Republic, and residing at 18 Rue du Moulin. aVent, Epernay, Marne, France, engineer, have invented certain new anduseful Improvements in and Relating to Improved Apparatus for PurifyingIndustrial Oils and Fats, of which the following is a completespecification.

This invention has for its object to provide an improved apparatus forpurifying oils, fats and greases which have been used in workshops andfactories either for lubricating machinery or parts of machinery, or forother purposes and in the course, of which use all kinds of impuritieshave become incorporated in theseoils, fats and greases. Oil, fat orgrease rendered impure by such uses is hereinafter referred to as usedoil. Q

One example of the improved apparatus 1 is illustrated in theaccompanying drawing in which Figure 1 is a vertical axial section ofthe entire apparatus with a convenient heating means. Fig. 2 is a crosssection on the line 22 of Fig. 1. I

In the example shown, the improved apparatus consists of a, vat orsimilar vessel a for containing the used oil to be purified,

having a conical bottom b fitted at its lower end with a blow-off cook aThis vat or c0llector a for the used oil or grease is closed by means ofa lid (1 through which there extends a pipe e toward the bottom of thevat, for instance as far as the commencement of the cone 6. This pipe eends at its upper end outside the vat in a funnel f. The cover all neednot close absolutely airtight. An oil exit pipe 9 extends from the upperpart of the cylindrical body of the vat a. The vat is inclosed in acasing h which forms a jacket 2' for the circulation of hot water aroundthe vat. The water enters through an upper inlet, 7' and aftercirculating passes out through a lower outlet k. The heating of thiswater may be efiected in various ways, for instance by utilizing the hotexhaust gases of a gas engine where the apparatus is set up in a'factoryor workshop using a gas engine, or by utilizing steam. In the first casethere is arranged on the gas exhaust pipe m, a small boiler n of theshape shown in cross section in Fig. 2 arranged astride the pipe m. Fromthe upper part of this boiler there extends a vertical pipe 0 whichopens into the inlet j of steam it is suificientto arranged at thebottom of the casing h a steam nozzle 0 to which steam is supplied by apipe w.

The operation is as follows: The oils, fats and greases which have beenused and which it'is desired to purify are collected in the vat a. Thewater jacket 2' is heated as de-- scribed so as to produce an automaticand continuous circulation of the hot water. The hot water enters thecasing k at a temperature which is generally about 70 degrees O. andpasses out through the outlet 7: at a temperature of about degrees C.The heating is continued for about 36 hours, at the expiration of whichall the impurities which have been carried over mechanically by the oilor grease during the lubrication of machinery have become separated,precipitated and collected in the conical bottom 6. When thepurification has been carried far enough, the purified oil is removed byadmitting water into the vat a through the pipe 6, whereupon thepurified oil will flow out through the pipe 9. When the vat has beenfilled with water the blowofi cock 0 is opened and the impurities aredischarged therethrough.

The improved apparatus has the advantage of being simply andeconomically constructed, of being readily kept in working order, and ofbeing reliable and automatic in operation. In particular, it is notliable to become choked with dirt as is the case for instance inapparatus having heating coils whichare immersed directly in the liquidor substance to be purified, and in which the impurities have a tendencyto be deposited upon said coils, thereby necessitating frequentcleaning.

What I claim is:

An apparatus for purifying oils and fats, comprising a jacketed vathaving an oil discharge at its upper end and a sediment discharge in itsbottom, a water pipe extending into the vat, a boiler, pipes leadingfrom the boiler into the upper and lower In testimony whereof I havehereunto set portions of Water jacket of the vat, a water my hand atParis (France), this second day 1.

supply pipe adapted to discharge into the of May, 191% pipe of the vatan expansion vessel connect- 5 ed with the water pipe, and a pipeleading Y JULES NOEL from the expansion vessel and connected In thepresence of two witnesses: with the pipe leading from the boiler to theCHAS. P. PRESSLI, lower portion of the Water jacket. JEAN G. SMITHBQN.

